基桩嵌岩段承载特性试验研究

Abstract
Figure/Table
References (0)
Related Citation (15)

Abstract The characteristics of pile-rock structure interface considerably influence the load transmission process of the rock-socketed segment of pile. The expressions for pile side friction are established based on the mechanism of sliding dilatancy. An analytical solution for the friction and axial force of the rock-socketed segment are obtained when the surrounding rock is under the conditions of the sliding dilatancy stage. Then, the distribution of friction resistance and axial force along the rock-socketed segment are discussed based on the obtained analytical solution and the pile tip load sharing ratio. The load transfer process of the rock-socketed segment of pile is analyzed by conducting a field test on a large-diameter rock-socketed pile. The side friction characteristics in soil and rock are expounded. The calculation parameters are obtained inversely by combining with the theoretical formula. Theoretical calculation result exhibits good agreement with measured data.

Key words： bridge engineering bearing behavior experimental study rock-socketed segment load sharing ratio

Received: 28 July 2017

Fund:Supported by the National Natural Science Foundation of China (51208195); Open Engineering Fund for Key Laboratory of Stability Control and Health Monitoring of Geotechnical Engineering (E21618)

Corresponding Authors: LEI Yong E-mail: leiyonghnu@163.com

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LEI Yong
	YIN Jun-fan
	CHEN Qiu-nan
	LIU Yi-xin

Cite this article:

LEI Yong,YIN Jun-fan,CHEN Qiu-nan, et al. Experimental Study on the Rock-Socketed Segment of Pile and Analysis of Its Load-Bearing Characteristics[J]. Journal of Highway and Transportation Research and Development, 2017, 11(3): 54-61.

URL:

http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/ OR http://manu27.magtech.com.cn/Jwk_gljtkj_en/EN/Y2017/V11/I3/54

[1] WILLIAMS A, PELLS P J N. Side Resistance Rock Sockets in Sandstone,Mudstone,and Shale[J]. Can. Geotech. J.,1981,18(4):502-513.
[2] THORNE C P. The Capacity of Piers Drilled Into Rock[C]//Proceedings of the International Conference on Structural Foundations on Rock.Sydney:[s.n.], 1980:223-233.
[3] CHIU H K, DIGHT P M. Prediction of the Performance of Rock-socketed Side-resistance-only Piles using Profiles[J]. International Journal of Rock Mechanics and Mining Sciences, 1983, 20(1):21-32.
[4] HONG Nan-fu, CHEN Zhu-chang, LIN Feng. Bearing Research on Rock Socketed Bump Section of Artificial Dig-hole Pile in Soft Rock[J]. Geotechnical Foundation, 1999,13(3):18-23. (in Chinese)
[5] SEIDEL J P, COLLINGWOOD B. A New Socket Roughness Factor for Prediction of Rock Socket Shaft Resistance[J]. Canadian Geotechnical Journal, 2001, 38(1):138-153.
[6] ZHANG Jian-xin, LIU Li-min. The Effect of Hole Side Roughness on the Pile Side Resistance for Cast-in-site Piles[J]. Geotechnical Investigation and Surveying, 2003(1):13-15. (in Chinese)
[7] GU X F,SEIDEL J P,HABERFIELD C M. Direct Shear Test of Sandstone-Concrete Joints[J]. International Journal of Geomechanics, 2003, 3(1):21-33.
[8] HE Si-ming, LU Guo-sheng. Study on Load Transfer Characteristic of Rock-socketed Pile[J]. Rock and Soil Mechanics, 2007, 28(12):2598-2602. (in Chinese)
[9] ZHAO Ming-hua, LEI Yong, LIU Xiao-ming. Analysis of Load Transfer of Socketed Piles Base on Characteristics of Pile-rock Structure Plane[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(1):103-110. (in Chinese)
[10] ZHAO Ming-hua, LEI Yong. Analysis of Bearing Capacity Characteristic of Rock Socketed Piles Based on Fractal Theory[J]. Engineering Mechanics,2012,29(12):127-133. (in Chinese)
[11] XING Hao-feng, MENG Ming-hui, HE Wen-yong, et al. Distribution of Shaft Resistance of Rock-socketed Piles Based on Mechanical Properties of Pile-rock Interface[J]. Chinese Journal of Geotechnical Engineering, 2012,34(12):2220-2227. (in Chinese)
[12] HE Cheng-bin, ZHAO Ming-hua, LEI Yong. Negative Friction Computational Research of Rock-socketed Pile Based on Load Transfer Method[J]. Engineering Mechanics, 2014, 31(11):110-115. (in Chinese)
[13] KILIC A, YASAR E, CELIK A G. Effect of Grout Properties on the Pull-out Load Capacity of Fully Grouted Rock Bolt[J]. Tunneling and Underground Space Technology, 2002, 17(4):355-362.
[14] DONG Ping, QIN Ran, CHEN Qian, et al. Bearing Behavior of Large-diameter Rock-socket Piles[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(12):2099-2103. (in Chinese)
[15] LEI Yong, ZHAO Ming-hua, MA Bin-hui. Calculation Method of Socketed Length of Rock Socketed Pile Based on Requirement of Pile Top Settlement[J]. Journal of Highway and Transportation Research and Development, 2011, 28(5):86-91. (in Chinese)
[16] ZHAO Ming-hua. Soil Mechanics and Foundation Engineering[M]. Wuhan:Wuhan University of Technology Press,2003. (in Chinese)
[17] XU Song-lin, WU Wen, WU Yu-shan. The Preliminary Load Transfer Analysis of Concrete Pile in Soft Rock[J]. Rock and Soil Mechanics, 1998, 19(1):75-87. (in Chinese)
[18] LIU Song-yu, JI Peng, WEI Jie. Load Transfer Behavior of Large Diameter Cast-in-place Pile Embedded in Soft Rock[J].Chinese Journal of Geotechnical Engineering, 1998, 20(4):58-61. (in Chinese)